CVE-2026-6817Network attack vector

Unauthenticated stored script execution via unescaped rate_reason

Published May 2, 2026 · Updated May 2, 2026

Stored XSS in AYS Pro Quiz Maker 6.7.1.29 and earlier allows remote attackers to persist scripts through the rate_reason parameter. Quiz Maker accepts the rate_reason value without sufficient input sanitization and later renders the stored value without output escaping. No account is required to plant the payload; script execution occurs when a user opens a page that displays the injected reason.

CVSS severity5.8
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in AYS Pro Quiz Maker 6.7.1.29 and earlier allows remote attackers to persist scripts through the rate_reason parameter. Quiz Maker accepts the rate_reason value without sufficient input sanitization and later renders the stored value without output escaping. No account is required to plant the payload; script execution occurs when a user opens a page that displays the injected reason.

The record

CVE
CVE-2026-6817
Published
May 2, 2026
Updated
May 2, 2026
Vendor
AYS Pro Plugins
Product
Quiz Maker
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 2, 2026CVE publishedPublication date reported by the CVE source.
  2. May 2, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=6.7.1.29

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

AYS Pro Plugins · Quiz Makerversion=0 <=6.7.1.29

Published CVSS scores

5.8WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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